With daytime temperatures that can reach 430°C, why is nighttime on Mercury so cold?

With very little atmosphere, heat is quickly lost into space

The difference between a star and a planet is

a planet is smaller than a star and does not glow

Temperature differences between nighttime and daytime on Earth are relatively small due to

Earth's high daily spin rate and short nighttime

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Solar System part 2

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about planets

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Questions 11

Answers

1
The smallest planet of our Solar System is
Mercury
Venus
Earth
Mars
2
With daytime temperatures that can reach 430°C, why is nighttime on Mercury so cold?
At night, the solar wind dissipates all heat
The year is too short for the heat to build up
The weak gravitational field doesn't retain the heat
With very little atmosphere, heat is quickly lost into space
3
What is the predominant component of Jupiter's atmosphere?
helium
methane
ammonia
hydrogen
4
Saturn's rings are composed of:
chunks of ice and rock
space junk lost from Earth's orbit and other space missions
methane gas
hydrogen
5
The predominant gas in the atmosphere of Venus is
water vapor
oxygen
carbon dioxide
nitrogen
6
Life in our Solar System is most likely to be found where there is liquid water
Life elsewhere in our solar system is not possible
Europa and/or Enceladus
Venus
Mars
7
What is the likely cause of the 98° tilt of Uranus's axis?
Neptune's effect on Uranus' gravitational field
fluid wave dynamics due to its large molten core
distorted magnetic poles due to its large molten iron core
a collision with a large body
8
The difference between a star and a planet is
a planet is smaller than a star and does not glow
a planet has nuclear fusion but it glows less than a star
a planet glows and a star does not
they both glow but the planet is smaller
9
The predominant gas in the atmosphere of Earth is
oxygen
carbon dioxide
nitrogen
water vapor
10
Temperature differences between nighttime and daytime on Earth are relatively small due to
polar regions absorbing most solar energy
seasonal fluctuations and Earth's magnetic field
70% of Earth being covered by water
Earth's high daily spin rate and short nighttime
11
The “habitable zone” is an area around a star (ex: the Sun) where:
water can exist in liquid form on planets
All of the above
Earth and Mars are situated
life could exist on planets or moons

Solar System part 2 Flashcards | StudBud